Valve.



J. A. MUCULLOCH.

VALVE. APPLIUATION FILED Nov. 19, 1909.

1,016,167. VPmentea .12.11.30, 1912.

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J. A. MGGULLUGH.

VALVE.

APPLICATION FILED NOV. 19, 1909.

1,016,167. Patented .13.11.30, 1912,.

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WITNESSES INVENTOR M mi. www1,

ap'l/OM JOHN AUSTIN IOGULLOCH, 0F HOKEESPOBT, PENNSYLVANIA.

VALVE.

Bpeeioatlon of Letters Patent.

Patented Jan. 30, 19112.

Application med November 19, 1909. Serial No. 528,880.

To all whom z't ma concern:

' Be it known t at I, JOHNSAUs'rEN Mci CULLocH, of McKeesport, in thecoun. Allegheny and State of Pennsylvania,. ave invented a new anduseful Improvement in Valves, of which the following is a full, clear,and exact description, reference being had to, the accompanyingdrawings, forming part of this specification, in which- Y Figure 1 is asectional view of one form of valve made in accordance with myinvention, showing the valve in two different osltions. Fig. 2 is asectional view of a portion of the sectional casing, showing the partsdetached. Fig. 3 is a section throu h one of the members of thesectional casmg as indicated on the line III- HI of Fi 2 and Fig. 4 is aview similar to Fig. 1 s owing the modified form of valve.

My invention relates to an improvement in valves for controlling theflow of fluid pressure to and from pressure actuated cylmders, and isdesigned to provide a valve which is cheap of construction, readilytaken apart and assembled.

A further object-of my invention is to prrovide a valve in which thestem is free om packing rings, the packing rings being inter osedbetween the adjacent members whic form a shell or sectional casingwithin the valve casing. These ackin rings are arranged to engage the vave, an also the bore o the valve casing, and prevent leakage from portto port along the body of the valve, and also between the sectionalcasing and the body of the valve. Also to provide a valve from which theparts which are subjected to wear may be removed and similar partsinserted, without disconnecting the valve casing, or 'without anyappreciable interruption of the mechanism operated by the fluid pressurecontrolled by the valve.

The precise nature of my invention will be best understood by referenceto the accompanying drawings which will now be de-V scribed, it lbeingpremised, however, that various changes can be made in the details ofconstruction and arrangement of parts without departing from the spiritand scope of my invention as defined in the appended claims.

Describing Figs. 1, 2 and 3, the numeral 2 designates t e valve casing,and is bored out the same diameter throughout its length,

with the exception of a small portion at the lower end thereof which isprovided with the f lan e 3. Seated on this flange 3 and within t e boreof the valve is a sectional casing which is composed of a plurality ofmembers. The lower member 4 is provided with a convex annular groove inlts upper face, and seatedtherein is a continuous semicircular packingring 5. Engaging this packing ring 5 is a second member 6 of thesectlonal casin the upper end of which engages a secon washer or packingring 5a, which 1n turn 1s seated in a semi-circular annular groove in amember 7 which also forms a portion of the sectional casing, the upperend of which is also provided with a semi-circular annular groove inwhich is seated apacking ring 5". The remainder of this sectionalcasing'is formed of the members 8, 9, 10, 11, 12 and 13; and interposedbetween these members are the washers 5, 5, 56,5' and 5g which aresimilar to the 'washer 5. Secured to the upper portion of the bod'y 2and in engagement with the uper member 13 of the sectional casing is aonnet 2h. Each of the members composing the sectional casing and thebonnet 2h are bored out to receive the movable valve member 14. Securedto the upper end of this valve is a collar 15, and secured to the lowerend thereof is a nut 16 which extends slightly beyond the face 3 of thevalve 2. The collar 15 and nut 16 form positive stops for the full throwof the valve when moved in either direction. This valve is provided withthe cut away portions 14a, 143 and 14:c to allow the water or otherfluid ressure to flow from one port to another. ach of the members 6, 78, 9, 10, 11 and 12 are provided with an internal and external groove,and they are also provided with orices connecting the interior andexterior grooves of these members with each other. The valve casing 2 isprovided with interior annular grooves 2, 2b, 2c, 2d, 2, 2t and 2g, andwhich register respectively with the annular groove on the exterior ofthe members 6,' 7, 8 9, 10, 11 and 12 of the sectional casing. 1i is apressure inlet port which leads into the body of the valve casing and isin communication with the annular recess 2d. 18 is 2c in the valve body.20 is a pipe which is 'connected with the other end of the cylinlOOvmembers 26 and 26,

der, and communicates with the port 21 which is in communication withthe annular recesses 2 and 2 in the valve body. 22 is a waste pipe whichleads to any point of proper discharge and is connected with the port 23which 1s Iin communication with the recesses 2b and2t in the valve body;

The various parts ma be assembled in the following manner: he variousmem bers together with their washers which form the sectional casing,and the bonnet 2h may be placed on the valve, and the valve togetherwith the casing is then inserted into the valve body and the bonnet 2his secured in place by means of the screws 24 and theirl nuts 25. Thewashers between the various members of the sectional casing act aspacking rings between the various recesses or ports in the body of thecasing and also act as packing rings for the valve to prevent the flowof water from one point to another between the walls of the casing, thebore of the valve body; and the body of the valve and the bore of thesectional casing. These packing rings are also placed in such a mannerthat the shoulders of the valve at its reduced portions 14", 14:h and 14in its movement will not engage the e e of the packing rings and ten tospread t em, but will Valso always enga e them in such a manner that theedge w1ll tend to close them instead of opening, and they are also soplaced that the pressure of the fluid will tend to spread them to packthe space between orts.

In ig. 4 I have illustrated a slightly modified form of valve, in whichthe valve member is formed of a plurality of hollow which are heldtogether by means of the through bolt 27. 28

.and 29 are stops similar to the stops 15 and 16 shown on Fig. 1. Inthis deviee'I have shown a valve to be used in connection with one endof a-cylinder to force the piston in one direction by hydraulicpressure, and which may be returned in any manner. 30 is a pipe leadingto the cylinder, 31 is a pressure supply pipe and 32 the exhaust ordischarge. In this construction the sectional casing is also composed ofa plurality of members 33, 34, 35, 36, 37 and 38; and interposed betweeneach of these members is a exiblegpacking ring 5h. The sectional cas-.ingis lieljd in place by means of an internally threaded cap 39.,

In the construction shown in Fig. 1, pressure is admitted throu h theinlet 17 to the port 19, and from sai port ressure is admitted to oneend of the cyllinder through the pipe 18. The exhaust from the other endof the cylinder asses through the pipe 20 to the ort 21 and thencearound the portion 14 o the valve, through the port 28 to the exhaustpipe 22. When the valve is reversed by drawing it upward so thatthenotaio? .portion 1d of the valve.

'In the construction shown in Fig. d, pressure is admitted to one end ofthe cylinder from the i e 31 through the (gips .30 and when shied in thereverse ection the contents of the cylinder are exhausted thioligh thepi e 32 from the pipe 30.

It will rea y be understood by those familiar with Ithe art that I mayprovide an extra valve and sectional casfor each valve casing. Theseveral mem ers of the extra sectional casin and their interposedwashers bein stacke on the extra valve, so that they w l be available toIbe inserted into the valve casin when the sectional casing and thevalve 1n use therein is to be removed for repairs or to be cleaned. Whenthe sectional casing and valve areto be repaired the bonnet or screw'capis removed and the valve together with the sectional casi are withdrawnand the extra assemb ed sectional casing and valve are inserted inplace. The cap or bonnet is then secured in place and the valve is readyfor use. 'The removed parts can then be cleaned and re aired, andreassembled sofas to be 4availab e for reinsertion when the valve iscasing, so that there will be no likelihood ofA inserting the wrongwasher at any place. Also from the provision of a valve from which thewhole sectional casing, to ether with the lvalve may readily and simtane ously be withdrawn from the valve casing, and similar parts, whichmay have been previously stacked on the valve, ma be simultaneouslyinserted and secur in their place, in la very short space of time. I amthereby enabled to repair a valve without any appreciable interruptionof .the continuity of the mechanism to which thepvalve controls the iiowof fluid pressure.

v1. A valve having a main cas' provided with fluid ports, a sectionalcasing within the main casin said sectional casing being formed of aurality of members with inter osed U-s a ed acking rings between saidmembers, t ere ing openings throu h said members in communication with te iiuid ports adjacent thereto, a movable valve member within thesectional casin ,and a plurality of pistonheads on said -va ve member,said va ve member also having a plurality of reduced ortions between thepiston heads, the re uced portions `being arranged to open communicationbetween ad' .jacent ports in the casing, and the piston formed of aplurality of members and U- sha ed packing rings interposed between saimembers, said membershaving openings therethrough and communication withthe ports adjacent "theretof and a movable Abetween t valve memberhaving reduced portions within the sectional casmg, the reduced portionsbein arranged to open communication e inlet and outlet ports, and thebody portions of said valve being -arranged to cut ofi' communicationbetweenthe ports, the packing rings being so disposed with relation to te. reduced portions of `the valve that the body portions' thereof willalways enter the' rings from the rounded side to prevent cutting thepacking rings; substantially as described.

In testimony whereof, lI have hereunto set my hand.

JOI-IN AUSTEN vWitnesses:

JAs. P. 4DAVIS,- F. W. YOUNG.

MCCULLCH.

